Circle, the stablecoin issuer, has received final approval from the OCC, becoming a national trust bank in the United States. This means that USDC reserve management will be placed directly under federal bank regulation. Circle has upgraded from a payments tool issuer to a financial institution able to provide banking services such as custody. The market reacted quickly: Circle rose more than 16% before the open, and Ark Invest bought $13.7 million worth of stock on the same day. The structural change is that when the stablecoin issuer obtains a banking license, USDC’s credit backing may shift from “equivalent to 1 dollar” to “federally regulated deposits,” potentially changing the pathways for institutional funds flowing into crypto assets—previously requiring indirect holdings via custodial banks, now Circle itself is the bank. Downside risks: a banking license brings higher compliance costs and stricter capital requirements; if Circle holds USDC reserves under bank capital rules, capital-use efficiency may decline, affecting USDC yield or fee structure. In addition, the license does not solve a liquidity crisis; large-scale redemptions can still trigger bank-runs-like pressure. Circle’s move is a landmark event marking stablecoins’ leap from “crypto-native tools” to “regulated financial infrastructure,” but the license only shifts risks from the gray zone into the spotlight of regulation.